is 2 305483 - 1
has 91960 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actualunknown50000500000.000514.9939%0.000514.9939%14.9939%
PrimeNet2400.000052.5000%3200900000.000115.6055%0.000159.9126%7.4126%
GPU722440.000056.8182%55001500000.000111.4219%0.000161.7504%4.9322%
Difference-440.0000-56.8182%+44500-100000+0.0004+3.5719%+0.0004-46.7565%-46.7565%

Known prime factors (2 factors, 134.5 bits, 0.04402886% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3054837942559722.92113
13
-1131.834e-121.705e-82.098e-8
305483387955125073567995916118986805044734111.5806349864396276846762604121781
29 × 68677745113 × 3188235736200353
2021-09-056867774511331882357362003535.404e+111,791,7503,345,239

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
3054833081356470249193148075534103719289027387341134.501
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-02-06T16:51:36Lisander ViaeneManual testing5000050000-
skipped known factor: 7942559
--0.001--9.781%


Trial Factoring results:
No TF results for M305483


ECM factoring results:

Old Calculation Method

Total ECM effort:16.651 GHz-days
Estimated T-Level:27.688
DigitsB1CurvesCompleteFacMiss
2011000625 / 1006.2500.187%
2550000625 / 2802.23210.687%
30250000344 / 6400.53858.396%

New Calculation Method

Total ECM effort:16.651 GHz-days
Estimated T-Level:27.688
DigitsB1CompleteFacMiss
201100037.7310.000%
25500005.1860.560%
302500000.52359.249%
3510000000.04295.902%
4030000000.00399.726%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.145
250000250000001445.495
25000038500000532.388
250000385000001476.624


Lucas-Lehmer results:
No L-L results for M305483


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T15:36:03Oliver KruseOllaptop
7942559
D3E1FE9ED1FE0F__no
2017-09-22T20:37:24Oliver KruseManual testing
7942559
D3E1FE9ED1FE0F__no
2017-10-12T22:29:03Oliver KruseGTX-0D3E1FE9ED1FE0F__no
2017-12-11T08:27:52ATHxps
7942559
D3E1FE9ED1FE0F__no
2020-04-18T07:19:37Oliver KruseAddPrpType5
7942559
53C19636E4327B__no
2021-09-05T04:12:29mikrNitron
7942559
3879551250735679959161189868050447
53C19636E4327BB3no
2021-09-05T05:04:33H Michaelson
7942559
3879551250735679959161189868050447
53C19636E4327BB3no


P-1 factor-bounds graph:
B1 = 50000 (P-1 stage 1)
100
101
102
103
104
105
106
107
108
109
1010
1011
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
TF factor-bounds graph:
220
230
240
250
260
270
280
290
2100
2110
2120
Last modified: 2022-02-06T16:51:36+00:00